Audion electrode structure



Dec. 29 1925.

W. GARITY AUDION ELECTRODE STRUCTURE Filed March 17, 1923 270% V2? Wlm m Patented Dec. 29, 1925.

UNITED STATES PATENT 'OFFIFCE.

WILLIAM GARITY, OF BROOKLYN, NEW YORK, ASSIGNOR TO DE FOREST RADIO TELE- PHONE & TELEGR OF DELAWARE.

- To all whom it may concern:

. Be it known that I, WILLIAM GARrrY, citizen of the United States, residing at Brook 1 n, 514 McDonough St. in the county of 6 rigs and State of New ork, have made a certain new and useful Invention in Audion Electrode Structure, of which the following is a specification.

his invention relates to an audion electrode structure.

It has for its object the provision of the usual electrode structure which is simple, economical of manufacture and efficient in operation. 4 A further object of the invention is to provide an audion electrode structure which permits theassembling of the audion electrodes with the fewest o erations and which at the same time a ords rigidity and strength. Further objects of the invention will appear more fully hereinafter. i f v The invention consists substantially in -the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth as shown by the accompanying drawing and finally pointed out in the a Referring to the Figure 1 is plate electrode pended claims. rawmg: a plan view of an enlarged as originally stamped. I Fig. 2 shows the plate electrode in side elevation after being formed and mounted on its supports. I Fig. 3 is a sectional view taken on the line 33 of Fig. 2, looking in the direction of the arrows. Fig. 4 is a sectional view taken on the line 44 of Fig. 3, looking in the direction of the arrow. a

Fig. 5 is a view in side elevation of a complete audion structure.

Fig. 6 is a front view thereof.

e same partis desi ated"by'-the same reference character w erever it occurs throughout the several views.

' It is among the special present invention to provi e a plate electrode for thermionic vacuum tubes, such as 60 the audion, wherein the plate electrodes may be made from the stampings, and to proas the assembly of the vide such stampin plate electrode re ative to the other electrode which in this position. The

urposes of my H COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION AUDION nnncrnonn srnucrunn. Application filed March 17, 1923. Serial No. 625,911.

trodes of the audion structure and relative to the supports thereof may be most expeditiously and efficiently secured.

accordance with my invention I provide a structure which permits the employment of a horizontal concentric electrode arrangement, that is, where the filament electrode extends horizontally and is surrounded by a spiralcoil grid electrode which in turn is surrounded by a cylindrical plate electrode. The filament electrode is illustrated at 1 and is provided-with the usual circuit electrode supports 2. The grid elecsurrounds the filament electrode, butspaced therefrom, is shown at 3 and the terminals thereof are connected by the conducting electrode supports 4. The plate electrode is in the form of a cylinder 5 and is spaced from the grid surrounds the same and is supported by the electrode supports 6.

I will now describe the method of constructing the cylindrical, plate electrode 5 and-the means for attaching the same to the supports 6 thereof. The plate electrode 5 is preferably in the form of a stamping as shown in Fig. 1, and is provided with two lips 10 and 11 extending from opposite ends thereof. The lip 11 is provided with lateral extension 12 and longitudinal extension 13.

The pla electrode thus formed is rolled into the form of a cylinder so that the electrode supports 6 fit in indentations 14 formed. in the edge portion of the plate stamping adjacent the lip 10. The lip 10 thus comes in place between the two elec-- trode supports 6 and bears against the lip 11. The flanges 12 and 13 thereof are thereupon bent around the electrode supports 6 and the lower abutting edges of the lips 10 and 11, respectively, and preferably welded top and bottom edges of the stamping 5 are cut away, as shown at 20, to form, when rolled into its cylinder, a space 21 to permit the wire of the grid electrode 3 to extend therethrough for attachment to a support by the grid electrode su ports 4.

t will be apparent from this construction that- I have provided an exceedingly simple and efficient structure which affords simplicity of manufacture and assembly and at the same time ensures a rigid electrode strucelectrode but without departing from the spirit and scope of my invention as defined in the claims, but having shown and described a structure embodying the principles thereof, what I claim as new and useful and of my own invention,

and desire to secure by Letters Patent is:

1. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other, a support for said cylinder, and. means for securing said tongues to said support.

2. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other, a. support for said cylinder, and means for securing said tonguesto said support and to each other.

said blank being 3. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof, the formed into acylinder with the tongues positioned against each other, a support for said-cylinder, and means forming part of said blank for securing said tongues to said support.

4. In an audion structure, a plate electrode comprising a blank having tongues extendin from opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other, a support for said cylinder, and means forming part of said blank for securing said tongues to said support and to each other.

5. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof the said blank being formed into a cylinder with the tongues positioned against each:

other, a pair of supports for'said cylinder, and means for securing said tongues to both of said supports.

. 6. In an audion structure, a plate electrode comprising 'a blank having tongues extending from opposite edges thereof the said blank being formed into a cylinder with the tongues positioned against each other, a pair of supports for said cylinder, and means for securing said tongues to bothof said supports and to each other. 7

7. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof the said blank being formed into a cylinder avpair of supports for said cylinder,-

with the tongues positioned against each other, a pair of supports for said cylinder, and means forming part of said blank for securing said tongues to both of said supports and "to each other.

9. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other, one of said tongues being provided with a lip extending from one edge thereof, a support for said cylinder, said lip being bent around said support to fasten said tongues together and to said support.

10. In an audion structure, a plate electrode comprising a blank having tongues extending from opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other,

one of said tongues being provided with a plurality of lips extending from the edges thereof, a plurality of supports for said cylinder, said lips being bent around said suppdrts to fasten said tongues together and to said supports.

11. In an audion structure, a plate electrode comprising a blank having tongues extendingom opposite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each other, one of said tongues being provided with a lip extending from one edgev thereof, a support for said cylinder, said lip being bent around said support-and, welded there to. v I

l 1%. In an audion structure, a plate electrode comprising a blank having tongues extending 'from'opp'osite edges thereof, the said blank being formed into a cylinder with the tongues positioned against each said blank being formed into a cylinder with the tongues positioned against each other, one of said tongues bein provided with a lip extending'from each e ge thereof,

a air of supportsfor said cylinder, two of saldalips be ng bent around said supports, and the third being bent over the edge of the with the tongues positioned against each other tongue.

14. In an audion structure, a plate elecof, a pair of supports for said cylinder, two vtrode comprising ablank having tongues exof said lips being bent around said su tending from opposite edges thereof, the orts and welded thereto, and the third 11p 1 said blank being formed into a cylinder Eeing bent over the edge of the other tongue. 5 with the tongues positioned against each In testimony whereof I have hereunto set other, one of said tongues being provided my hand March A. D., 1923.

with a lip extending from each edge there- WILLIAM GARITY. 

